10  Standardised Derived Elements

10.1 T able name: DRUG_ERA

A Drug Era is defined as a span of time when the Person is assumed to be exposed to a particular active ingredient. A Drug Era is not the same as a Drug Exposure: Exposures are individual records corresponding to the source when Drug was delivered to the Person, while successive periods of Drug Exposures are combined under certain rules to produce continuous Drug Eras.

Generated as part of ETL process using standard OHDSI SQL script.

10.2 T able name: DOSE_ERA

A Dose Era is defined as a span of time when the Person is assumed to be exposed to a constant dose of a specific active ingredient.

Generated as part of ETL process using standard OHDSI SQL script.

10.3 T able name: CONDITION_ERA

A Condition Era is defined as a span of time when the Person is assumed to have a given condition. Condition Eras are chronological periods of Condition Occurrences.

Generated as part of ETL process using standard OHDSI SQL script.